We started to monitor these feeds comprehensively on 24th July 2012; before this date we only have sporadic or no data at all.

The AIS feeds for some periods may be incomplete.

Two sources of data we use ocassionally do not match: latitude and longitude are always correct, but sometimes the associated time may not be accurate. You may see the path going to-and-fro. We are investigating this issue, if you spot any patterns please let us know!

If you have any comments or suggestions on how to improve this page, please contact us.